Mordenkainen's Faithful Hound

You conjure a phantom dog in an unoccupied space that you can see within range, where it remains for the duration, until you dismiss it as an action, or until you move more than 100 feet away from it.
The dog is invisible to all creatures except you and can't be harmed. When a Small or larger creature comes within 30 feet of it without first speaking the password that you specify when you cast this spell, the dog starts barking loudly. The dog sees invisible creatures and can see into the Ethereal Plane. It ignores illusions.
At the start of each of your turns, the dog attempts to bite one creature within 5 feet of it that is hostile to you. The dog's attack bonus is equal to your spellcasting ability modifier + your proficiency bonus. On a hit, it deals 4d8 piercing damage.

Material Components

A signal whistle, a piece of bone, and a thread

Gestures & Ritual

Verbal, Somatic, Material

Related School

Conjuration

Effect Duration

8 hours

Effect Casting Time

1 action

Range

30 feet

Level

4th

Applied Restriction

Wizard